4 = Fill in the blanks. (a) Fossil fuels are
and
(b) Process of separation of different constituents from petroleum is
called
(c)
Least polluting fuel for vehicle is
5 = Tick True/False against the following statements,
(a)
Fossil fuels can be made in the laboratory.
(T/F)
(b)
CNG is more polluting fuel than petrol.
(T/F)
(c)
Coke is almost pure form of carbon.
(T/F)
(d)
Coaltar is a mixture of various substances.
(T/F)
Kerosene is not a fossil fuel.
(T/F)
(please answer these questions )
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